Xu Muchen went to the Criminal Department to ask Mr. Gongyang to investigate Mr. Chen's case because he had found some clues and promised that all the credit would be given to Gongyang after solving the case, and Gongyang readily agreed.Wu Zhao was ordered to take Zhong Aba, a servant of the Chen family, to Zichensi and torture him to extract a confession. Zhong Aba finally confessed and admitted that he secretly put stolen goods into the Chen family because of accepting bribes.But before the confession was recorded, Zhong Aba was poisoned and died.Xu Muchen followed the bank's clues and found out that the matter was related to Shuitumo.Master Gu didn't want Xu Muchen to be involved, so he told Mrs. Xu about the matter and wanted her to stop Xu Muchen.Mrs. Xu was more concerned about Xu Muchen's safety than investigating the case.
She couldn't help but recall that after her husband Xu Chengsi's accident, those involved in the case were killed one after another.Su Guogong asked Su Jinning to secretly put the copied confession of Mr. Chen into the Xu Mansion, and then find someone to search it. Finally, he dismissed Xu Muchen and promised to take Liu Rong out of the Xu Mansion.Su Jinning took the opportunity to give Liu Rong a gift and deliberately mixed the scroll with the water grinding symbol into it, making Liu Rong mistakenly think it was an order given to her by her master, and brought it back to the Xu Mansion.The Ministry of Justice was ordered to search the Xu Mansion and found the scroll brought back by Liu Rong. They tested it with moonstone powder and found that it turned out to be the map lost by the Ministry of Justice.Mr. Gongyang captured Xu Muchen on the spot.